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Mathematics 9 Online
OpenStudy (gamer56):

help

OpenStudy (gamer56):

@razor99

OpenStudy (gamer56):

@Opcode

OpenStudy (anonymous):

If A and B are congruent to X and Y, then angle X = angle A angle Y = angle B thus angle C = angle Z (as ABC is similar to XYZ) so angle (X+Y+Z) = 180 65+85 +Z = 180 so Z = ???

OpenStudy (gamer56):

@sangya21 30?

OpenStudy (anonymous):

Correct. :)

OpenStudy (gamer56):

Can you help with 2 more?

OpenStudy (gamer56):

What is 3.25 × 10–4 written in standard form? A.0.0000325 B.32,500 C.0.000325 D.325,000

OpenStudy (anonymous):

Sure. :)

OpenStudy (anonymous):

3.25/10000 = 0.000325

OpenStudy (gamer56):

What is the value of the expression |x + y| when x = –8 and y = –13? A.21 B.5 C.–5 D. –21

OpenStudy (gamer56):

@sangya21

OpenStudy (anonymous):

what do you think?

OpenStudy (gamer56):

B? @sangya21

OpenStudy (anonymous):

Nopes |-8 -13| = 8+13 (|x+y| takes out the negative sign leaving only positive result behind|)

OpenStudy (gamer56):

21 because 21 is the only number left that is positive?

OpenStudy (gamer56):

@sangya21

OpenStudy (anonymous):

correct :)

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